How to Bend Parallel Kicks Forward to a Wall
Quick answer
When a bank of conduits kicks forward toward a wall square to the run, each conduit needs its own kick to stay parallel: the inside conduit kicks more and the outside one less. With c′ the center-to-center spacing, neighbor’s kick = kick ± c′ × (1 ÷ cos(angle) − 1), and the 90s stand c′ ÷ cos(angle) apart.
When a bank of conduits kicks forward, toward a wall square to the run, they can’t all kick the same amount and stay parallel: the conduit on the inside of the kick has to kick more, and the one on the outside less. Give the calculator one conduit’s kick, the reference, and it works out each neighbor’s.
What to measure
- Kick and Angle: for the reference conduit.
- Spacing, inside to inside: the gap between neighboring conduits.
- Reference conduit OD (optional): leave it blank if the reference conduit is the same size as the one selected.
How to bend it
- Bend the reference conduit as a kick with a 90 from the marks shown (see the Kick page).
- Bend the Outside conduit and the Inside conduit the same way, each to its own Kick at the same angle, with its own Between bends.
- Set the 90s Spacing at the 90s apart, center to center. That is wider than the bank’s spacing, because the legs reach the wall on a slant.
- For a bigger bank, work outward one conduit at a time, taking each neighbor as the next reference.
Where the numbers come from
c′ = spacing + (reference OD + OD) ÷ 2neighbor’s kick = kick ± c′ × (1 ÷ cos(angle) − 1)spacing at the 90s = c′ ÷ cos(angle)- Kick
- 4"
- Angle
- 30°
- Spacing, inside to inside
- 2"
- Reference
- 6 3/4" between bends, 1" shrink
- Outside conduit
- 3 9/16" kick, 5 15/16" between bends
- Inside conduit
- 4 7/16" kick, 7 5/8" between bends
- Spacing at the 90s
- 3 1/8"
If it turns orange or red
Each conduit is colored on its own, as on the Kick screen, and the results show the worst. The outside conduit, with the smallest kick, usually goes first. Its between bends can even come out negative, which means its bends overlap; the calculator shows the number in red rather than hiding it. Use a smaller angle or a bigger kick.
Get the marks for your bender
BendMate works this out from your bender’s radius and deduct, flags a bend that won’t work, and shows you every mark.
Common questions
Why can’t every conduit in the bank get the same kick?
Kicking toward a wall square to the run, the conduit on the inside of the kick has to kick more and the one on the outside less for the bank to stay parallel. For a 4" reference kick at 30° with a 2" gap in 1/2" EMT, the outside conduit kicks 3 9/16" and the inside one 4 7/16".
How far apart are the 90s in a parallel kick forward?
Spacing at the 90s = c′ ÷ cos(angle), where c′ is the bank’s center-to-center spacing. It is wider than the bank’s spacing because the legs reach the wall on a slant: 3 1/8" for 1/2" EMT with a 2" gap at 30°.
What if the outside conduit’s kick is too small?
The outside conduit, with the smallest kick, usually runs into trouble first, and its distance between bends can even come out negative, which means its bends overlap. Use a smaller angle or a bigger kick.